1 Answer

The cause of muscle cramps isn't always known. Muscle cramps may be brought on by many conditions or activities, such as:

• Exercising, injury, or overuse of muscles.


• Pregnancy. Cramps may occur because of decreased amounts of minerals, such as calcium and magnesium, especially in the later months of pregnancy.


• Exposure to cold temperatures, especially to cold water.


• Other medical conditions, such as blood flow problems (peripheral arterial disease), kidney disease, thyroid disease, and multiple sclerosis.


• Standing on a hard surface for a long time, sitting for a long time, or putting your legs in awkward positions while you sleep.


• Not having enough potassium, calcium, and other minerals in your blood.


• Being dehydrated, which means that your body has lost too much fluid.


• Taking certain medicines, such as antipsychotics, birth control pills, diuretics,statins, and steroids.




• Source > http://www.webmd.com/sleep-disorders/tc/nighttime-leg-cramps-topic-overview